“There is wisdom in turning as often as possible from the familiar to the unfamiliar: it keeps the mind nimble, it kills prejudice, and it fosters humor.”
“What seems natural to us is probably just something familiar in a long tradition that has forgotten the unfamiliar source from which it arose. And yet this unfamiliar source once struck man as strange and caused him to think and to wonder.”
“Wisdom comes from experience. Experience is often a result of lack of wisdom.”
“We both believe, and disbelieve a hundred times an hour, which keeps believing nimble.”
“Mathematical Knowledge adds a manly Vigour to the Mind, frees it from Prejudice, Credulity, and Superstition.”
“We become so used to the familiar that we begin to doubt the unfamiliar, until our eyes are opened and we see.”