Who was the first president of Czechoslovakia?

Quoted from Wikipedia:

Tomáš Garrigue Masaryk
(Czech pronunciation: [ˈtomaːʃ ˈɡarɪk ˈmasarɪk]), sometimes called Thomas Masaryk in English, (7 March 1850 - 14 September 1937) was an Austro-Hungarian and Czechoslovak politician, sociologist and philosopher, who as an eager advocate of Czechoslovak independence during World War I became the founder and first President of Czechoslovakia.