To thine own self be true.

Self-love, my liege, is not so vile a sin
As self-neglecting.

Love all, trust a few, do wrong to none.

He who refuses to forgive breaks the bridge over which he, too, must cross

I hear and I forget. I see and I remember. I do and I understand.

By three methods we may learn wisdom: first, by reflection, which is noblest; second, by imitation, which is easiest; and third, by experience, which is the most bitter.

Our greatest glory is not in never falling, but in rising every time we fall.

it is a terrible thing to look over your shoulder  when you are trying to lead-- and find no body there.