Perspective is a most subtle discovery in mathematical studies, for by means of lines it causes to appear distant that which is near, and large that which is small.

You must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.

It is a far worthier thing to read by the light of experience than to adorn oneself with the labors of others.

Just as courage imperils life, fear protects it.

The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known.

Time stays long enough for anyone who will use it.

We are deceived by promises and time disappoints us.