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

The teacher is not in school to impose certain ideas or to form certain habits in the child, but is there as a member of the community to select the influences which shall affect the child and to assist him in properly responding to those influences.

發現可能性的極限的唯一方法是超越它們進入不可能的領域。

The moment you stop trying is the moment you start dying.

Safety must always come first, no matter the cost.

The only thing that interferes with my learning is my education.

可持續性不是一種選擇，而是我們行業生存的必要條件。

聰明的人心里明白而言語不必太多。