One phrase for sending best wishes to someone is the Aristotle quote, "Love is composed of a single soul inhabiting two bodies." This phrase is best used for someone's wedding or anniversary. The exact phrases to send best wishes to individuals vary by the occasion or circumstance.
A phrase for sending best wishes to someone regarding the birth of a child is the Henry David Thoreau quote, "Every child begins the world again.” This quote is meaningful because it shows the message sender understands the importance of the newborn to both the new parents and the world at large.
One phrase for sending best wishes for someone's birthday is the George Burns quote, "You can't help getting older, but you don't have to get old." This may cheer up the celebrant in the event that he feels bad about getting older by reminding him that age is more of a state of mind than a physical reality.
A good phrase for sending best wishes upon someone's graduation is the Percy Blythe Shelley quote, "Fear not for the future, weep not for the past." This quote reminds those at the intersection of their past and future to live for the moment and make each day special.