"All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any."
1. Corinthians 6:12

" … the sage learns how best to develop himself so that his influence may endure. He must make himself strong in every way, by consciously casting out all that is inferior and degrading. Thus he attains that tirelessness which depends upon consciously limiting the fields of his activity."
I Ching #1

"Often a man finds himself weighing the choice between various kinds of pleasures, and so long as he has not decided which kind he will choose, the higher or the lower, he has no inner peace. Only when he clearly recognizes that passion brings suffering, can he make up his mind to turn away from the lower pleasures and to strive for the higher. Once this decision is sealed, he finds true joy and peace, and inner conflict is overcome."
I Ching #58 Line 4

"True joy must spring from within. But if one is empty within and wholly given over to the world, idle pleasures come streaming in from without. This is what many people welcome as diversion. Those who lack inner stability and therefore need amusement, will always find opportunity of indulgence. They attract external pleasures by the emptiness of their natures. Thus they lose themselves more and more, which of course has bad results."
I Ching #58 Line 3

"If an individual is bent only on pleasures and enjoyment, it is easy for him to lose his sense of the limits that are necessary. If he gives himself over to extravagance, he will have to suffer the consequences, with accompanying regret. He must not seek to lay the blame on others. Only when we realize that our mistakes are of our own making will such disagreeable experiences free us of errors."

"Limitations are troublesome, but they are effective. If we live economically in normal times, we are prepared for times of want. To be sparing saves us from humiliation. Limitations are also indispensable in the regulation of world conditions … economy, by setting fixed limits upon expenditures, acts to preserve property and prevent injury to the people."

"But in limitation we must observe due measure. If a man should seek to impose galling limitations upon his own nature, it would be injurious. And if he should go too far in imposing limitations on others, they would rebel. Therefore it is necessary to set limits even upon limitation."
I Ching #60–Judgement

"Often a man who would like to undertake something finds himself confronted by insurmountable limitations. Then he must know where to stop. If he rightly understands this and does not go beyond the limits set for him, he accumulates an energy that enables him, when the proper time comes,"
 I Ching #60 Line 1 

"We must know how to enjoy the moment without being deflected from the goal, for perseverance is needed to remain victorious."

"This is true in public life as well; it is not possible to achieve everything all at once. The height of wisdom is to allow people enough recreation to quicken pleasure in their work until the task is completed."
I Ching #5 Line 5

"Unlimited possibilities are not suited to man; if they existed, his life would only dissolve in the boundless. To become strong, a man's life needs the limitations ordained by duty and voluntarily accepted. The individual attains significance as a free spirit only by surrounding himself with these limitations and by determining for himself what his duty is."
I Ching #60 - Image

"If one is too severe in setting up restrictions, people will not endure them. The more consistent such severity, the worse it is, for in the long run a reaction is unavoidable. In the same way, the tormented body will rebel against excessive asceticism. On the other hand, although ruthless severity is not to be applied persistently and systematically, there may be times when it is the only means of safeguarding against guilt and remorse. In such situations ruthlessness toward oneself is the only means of saving one's soul, which otherwise would succumb to irresolution and temptation."
I Ching #60 Line 6

"Therefore, my brothers, I implore you by God's mercy to offer your very selves to him: a living sacrifice, dedicated and fit for his acceptance, the worship offered by mind and heart. Adapt yourselves no longer to the pattern of this present world, but let your minds be remade and your whole nature thus transformed. Then you will be able to discern the will of God, and to know what is good, acceptable, and perfect."
Romans 12:1-2 (N.E.B.)