Marcus Aurelius

Look well into thyself; there is a source of strength which will always spring up if thou wilt always look there.

Man must be arched and buttressed from within, else the temple wavers to the dust.

As for life, it is a battle and a sojourning in a strange land; but the fame that comes after is oblivion.

Remember that what pulls the strings is the force hidden within; there lies the power to persuade, there the life,- there, if one must speak out, the real man.

Every man's life lies within the present; for the past is spent and done with, and the future is uncertain.

Things that have a common quality ever quickly seek their kind.

Remember this,- that there is a proper dignity and proportion to be observed in the performance of every act of life.

Men exist for the sake of one another. Teach them then or bear with them.

Let thy chief fort and place of defense be a mind free from passions. A stronger place and better fortified than this, hath no man.

This is moral perfection: to live each day as though it were the last; to be tranquil, sincere, yet not indifferent to one's fate.