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

Quality is never an accident; it is always the result of intelligent effort.

The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

The future belongs to those who can adapt while staying true to their core values.

做出偉大工作的唯一途徑是熱愛你所做的事。

The principles of conditioning apply equally to all species.

如果你不改變，你就在落后。