不要害怕可能出错的事情，想想可能正确的事情。
Stop being afraid of what could go wrong and think of what could go right.
One can't proceed from the informal to the formal by formal means.
解释：不通过学习而能自己知道的，不去请教他人而能自己通晓的，从古到今没有这样的事。
Truth is what stands the test of experience.
恶魔往往用神圣的外表，引诱世人干最恶的罪行。