Most ignorance is by choice, you know, and so ignorance is very telling about what really matters to people. - Kim Stanley Robinson

Science was many things, Nadia thought, including a weapon with which to hit other scientists.

Nadia shook her head, marveling at the capacity people had for ignoring what they had in common, and fighting bitterly over whatever small differences existed between them.

This vain presumption, of understanding everything, can have no other basis than never understanding anything. For anyone who had experienced just once the understanding of one single thing, thus truly tasting how knowledge is accomplished, would then recognize that of the infinity of other truths, he understands nothing.