Rabbi Abba, in the name of Shemuel, says, "The schools of Shammai and
Hillel were at variance three years, the one party contending and
saying, 'The Halacha is according to us;' and the other, 'The Halacha is
according to us.' Then came a voice from the Lord and said, 'Both these
and those are the words of the living God, but yet the Halacha is
according to the school of Hillel.' What was the merit of the school of
Hillel that the Halacha should be pronounced to be according to it? Its
disciples were gentle and forbearing, for while they stood by their own
decisions, they also stated those maintained by the school of Shammai,
and often even mentioned the tenets of the school of Shammai first and
their own afterward. This teaches us that him who humbles himself, God
will exalt; and him who exalts himself, God will abase. Whoso pursueth
greatness, greatness will flee from him; and whoso fleeth from
greatness, greatness will pursue him."
THE TALMUD, _Eiruvin_, fol. 13, col. 2.