“Love many things, for therein lies the true strength, and whoever loves much performs much, and can accomplish much, and what is done in love is done well
“A man thirty years old, I said to myself, should have his field of life all ploughed, and his planting well done; for after that it is summer time
“I have frequently been questioned, especially by women, of how I could reconcile family life with a scientific career. Well, it has not been easy
“Business is never so healthy as when, like a chicken, it must do a certain amount of scratching around for what it gets
“No enterprise is more likely to succeed than one concealed from the enemy until it is ripe for execution
“We succeed in enterprises which demand the positive qualities we possess, but we excel in those which can also make use of our defects