If you truly want to upgrade your language skills, then translation might not be the best way to do it, but you're really just playing around, so I believe that if you find it fun, then more power to you.
嘘は良く聞こえるのに、私は純粋な真実を聞きたい。
今日の純粋数学は明日の応用数学。
Today's pure mathematics is tomorrow's applied mathematics.
仮令遊女でも純粋な恋をすれば、その恋は無垢な清いものです。
Even if she's a prostitute which falls in love, her love is a pure and noble feeling.