色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

Positive psychology is as concerned with strength as with weakness, as interested in building the best things in life as in repairing the worst.

The only thing necessary for the triumph of evil is for good men to do nothing.

The hardest part of design is keeping features out.

Psychology must be a purely descriptive science.

真相很少是純粹的，也從不簡單。

The preservation of the means of knowledge among the lowest ranks is of more importance to the public than all the property of all the rich men in the country.

My life is like my music, full of improvisation and change.