In the mind there is no absolute or free will.

Indulge yourself in pleasures only in so far as they are necessary for the preservation of health.

After experience had taught me that all the usual surroundings of social life are vain and futile; seeing that none of the objects of my fears contained in themselves anything either good or bad, except in so far as the mind is affected by them, I finally resolved to inquire whether there might be some real good having power to communicate itself, which would affect the mind singly, to the exclusion of all else: whether, in fact, there might be anything of which the discovery and attainment would enable me to enjoy continuous, supreme, and unending happiness.

If men were born free, they would, so long as they remained free, form no conception of good and evil.

Men will find that they can ... avoid far more easily the perils which beset them on all sides by united action.

The highest activity a human being can attain is learning for understanding, because to understand is to be free.

All happiness or unhappiness solely depends upon the quality of the object to which we are attached by love.