Erm...actually they say quite a lot, and rjh4's point is a valid one. If you claim that objective truths are ones that have physical evidence to support them, then that claim needs to have physical evidence to support it in order for it to be an objective truth (by your own argument).
If it does, present the physical evidence.
If it doesn't, then your assertion that objective truths need physical evidence isn't an objective truth (at least not by your definition), and is therefore subjective, and is therefore subject to your opinion.
You do know the difference between subjective and objective truths don't you?, because from where I'm standing it doesn't seem like it.
If it does, present the physical evidence.
If it doesn't, then your assertion that objective truths need physical evidence isn't an objective truth (at least not by your definition), and is therefore subjective, and is therefore subject to your opinion.
You do know the difference between subjective and objective truths don't you?, because from where I'm standing it doesn't seem like it.