Let no one delay the study of philosophy while young nor weary of it when old.
If thou wilt make a man happy, add not unto his riches but take away from his desires.
The wise man thinks of fame just enough to avoid being despised.
Remember that the future is neither ours nor wholly not ours, so that we may neither count on it as sure to come nor abandon hope of it as certain not to be.
Death is meaningless to the living because they are living, and meaningless to the dead… because they are dead.
Happiness is man's greatest aim in life. Tranquility and rationality are the cornerstones of happiness.