In the morning, when you are sluggish about getting up, let this thought be present: 'I am rising to a man's work.'

No longer talk at all about the kind of man that a good man ought to be, but be such

Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.

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

In one way an arrow moves, in another way the mind. The mind indeed, both when it exercises caution and when it is employed about inquiry, moves straight onward not the less, and to its object.

Do not expect Plato's ideal republic; be satisfied with even the smallest step forward, and consider this no small achievement.

The happiness and unhappiness of the rational, social animal depends not on what he feels but on what he does; just as his virtue and vice consist not in feeling but in doing.