The pessimist complains about the wind. The optimist expects it to change. The leader adjusts the sails.
Science adjusts its views based on what's observedFaith is the denial of observation so that belief can be preserved. - Tim Minchin
The human mind adjusts itself to a certain point of view, and those who have regarded nature from one angle, during a portion of their life, can adopt new ideas only with difficulty. - Antoine Lavoisier