Books minister to our knowledge, to our guidance, and to our delight, by their truth, their uprightness, and their art.
Ideas are forces; our acceptance of one determines our reception of others.
A cell is regarded as the true biological atom.
The magic of the pen lies in the concentration of your thoughts upon one object.
The real people of genius were resolute workers not idle dreamers.
Mathematicians do not write for the circulating library.