I hope Tony will meant what he will be saying for the next 6 years.
The Oath:
"I,(name), having been elected President of the Republic of Singapore, do solemnly swear (or affirm) that I will faithfully discharge my duties as such to the best of my ability without fear or favour, affection or ill-will, and without regard to any previous affiliation with any political party, and that I will bear true faith and allegiance to the Republic, and that I will preserve, protect and defend the Constitution of the Republic of Singapore."