Roger Federer

"Success requires sacrifice and dedication"

"I'm thankful for my support system"

"You need to embrace challenges"

"I believe in my abilities"

"You must keep improving"

"I love what I do"

"Success is my motivation"

"I appreciate the privilege"

"You have to be strong mentally"

"I always believe that if you put in the work, the results will come. I don't do things half-heartedly because I know if I do, then I can expect half-hearted results."

"The mark of a great player is in his ability to come back. The great champions have all come back from some sacrifice they made."

"I had my ups and downs, but I always believed something special was going to happen to me."

"You really can't play in the same way once you are over 30, but you can play smart."

"Tennis is beautiful when you're playing well, but there's nothing worse than when it's not going your way."

"I am actually in people's homes on their televisions every week. I'm more pervasive than newspapers. So, I can be a pretty good public service advertiser. I have the ability to touch people's hearts."

"Pressure is a privilege - it's only the players who care deeply about winning that feel it."

"I think the key thing is confidence and believing in yourself."

"Success is not just about winning - it's about improvement and surpassing yourself."

"Sometimes it's a bit much to ask a man to do everything he can, day in, day out, for all these years and keep on doing it. But I love what I do."

"The serve was always going to be my biggest weapon."

"I think there are always chances to win, and that's what I'm fighting for."

"When you do something best in life, you don't really want to give that up - and for me, it's tennis."

"I think the longer rallies are more exciting to watch."

"I'm just enjoying my time on the court these days."

"I've been very fortunate in my life and I'm aware of that."

"I try to be like a sponge, soaking up knowledge."

"It's not always the strongest and the fastest, but the smartest player wins."

"I loved always the game, but I loved even more the off-court lifestyle."

"I'm not afraid of the unknown - I welcome it."

"Talent alone can take you so far, but it's hard work that separates the good from the great."