What matters most is not what is behind us or before us, but what is within us.
Your work should be in praise of what you love.
Beware of what you want-for you will get it.
What if you do fail, and get fairly rolled in the dirt once or twice. Up again, you shall never be so afraid of a tumble.
If I quake, what matters it what I quake at? Our proper vice takes form in one or another shape, according to the sex, age, or temperament of the person, and, if we are capable of fear, will readily find terrors.
Make yourself necessary to the world, and mankind will give you bread.
Astronomy is a cold, desert science, with all its pompous figures,-depends a little too much on the glass-grinder, too little on the mind. 'T is of no use to show us more planets and systems. We know already what matter is, and more or less of it does not signify.