The wise man sees in the misfortune of others what he should avoid.

Always follow these two rules: first, act only on what your reasoning mind proposes for the good of humanity, and second, change your opinion if someone shows you it's wrong. This change of mind must proceed only from the conviction that it's both correct and for the common good, but not because it will give you pleasure and make you popular.

Observe and contemplate on the hidden things of life: how a man's seed is but the beginning, it takes others to bring it to fruition. Think how food undergoes such changes to produce health and strength. See the power of these hidden things which, like the wind cannot been seen, but its effects can be.

In the same degree in which a man's mind is nearer to freedom from all passion, in the same degree also is it nearer to strength.

It is the act of a madman to pursue impossibilities .

Dwell on the beauty of life. Watch the stars, and see yourself running with them.

If unwilling to rise in the morning, say to thyself, 'I awake to do the work of a man.'