Nature varies the seed according to the variety of the things she desires to produce in the world.
Poor is the man who desires a lot
All our knowledge is the offspring of our perceptions.
Therefore, O students, study mathematics and do not build without foundations.
The days are long enough for those who use them.
O sleepers! what a thing is slumber! Sleep resembles death. Ah, why then dost thou not work in such wise as that after death thou mayst retain a resemblance to perfect life, when, during life, thou art in sleep so like to the hapless dead?